1. monosaccharides are also known as what?
a. fats
b. simple sugars
c. proteins

2. the process by which organisms keep everything inside their bodies within certain limits is called:
a. homeostasis
b. evolution
c. metabolism

3. during a controlled experiment, a scientist isolates and tests:

b. a mass of information
c. a control group
d. a single variable

4. ***which of the following particles represents an ion?
a. 14 protons, 14 neutrons, and 14 electrons
b. 9 protons, 9 neutrons, and 10 electrons

d. 1 proton, 3 neutrons, and 1 electron

5. which of the following is not a way that science influences society?
a. provides answers to some of society’s practical problems
b. gives society answers to difficult ethical issues
c. advances technology that is useful to society

6. which of the following is not a goal of science?

b. to explain events in the natural world
c. to establish a collection of unchanging truths
d. to use derived explanations to make useful predictions

7. which of the following can affect the activity of enzymes?
a. activation energy, reactants, and ph
b. proteins, regulatory molecules, and ph
c. temperature, ph, and regulatory molecules

8. which statement best explains why compounds have different properties than the elements that form them? complete this statement: when elements form a compound…
a. …the bonds and structure of the elements change
b. …the masses of the elements increase
c. …the masses of the elements decrease

9. which of the following is not a characteristic of a living thing?

b. all living things use gasoline to metabolize energy
c. all living things interact with their environment
d. all living things have the ability to reproduce

10. which of the following explains the formation of the curved surface of water in the graduated cylinder depicted in the exam?

b. ionic bonds form between glass molecules in the cylinder
c. covalent bonds form between water molecules and glass molecules in the cylinder
d. attractive forces form between polar water molecules and polar glass molecules in the cylinder